21d0ba7ebb
This consolidates the common functionality from git-mergetool and git-difftool--helper into a single git-mergetool--lib scriptlet. Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
379 lines
8.0 KiB
Bash
379 lines
8.0 KiB
Bash
# git-mergetool--lib is a library for common merge tool functions
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diff_mode() {
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test "$TOOL_MODE" = diff
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}
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merge_mode() {
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test "$TOOL_MODE" = merge
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}
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translate_merge_tool_path () {
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if test -n "$2"; then
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echo "$2"
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else
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case "$1" in
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vimdiff)
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path=vim
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;;
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gvimdiff)
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path=gvim
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;;
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emerge)
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path=emacs
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;;
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*)
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path="$1"
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;;
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esac
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echo "$path"
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fi
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}
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check_unchanged () {
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if test "$MERGED" -nt "$BACKUP"; then
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status=0
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else
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while true; do
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echo "$MERGED seems unchanged."
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printf "Was the merge successful? [y/n] "
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read answer < /dev/tty
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case "$answer" in
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y*|Y*) status=0; break ;;
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n*|N*) status=1; break ;;
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esac
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done
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fi
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}
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valid_tool () {
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case "$1" in
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kdiff3 | tkdiff | xxdiff | meld | opendiff | \
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emerge | vimdiff | gvimdiff | ecmerge | diffuse)
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;; # happy
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tortoisemerge)
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if ! merge_mode; then
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return 1
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fi
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;;
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kompare)
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if ! diff_mode; then
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return 1
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fi
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;;
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*)
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if test -z "$(get_merge_tool_cmd "$1")"; then
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return 1
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fi
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;;
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esac
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}
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get_merge_tool_cmd () {
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diff_mode &&
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custom_cmd="$(git config difftool.$1.cmd)"
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test -z "$custom_cmd" &&
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custom_cmd="$(git config mergetool.$1.cmd)"
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test -n "$custom_cmd" &&
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echo "$custom_cmd"
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}
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run_merge_tool () {
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base_present="$2"
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status=0
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case "$1" in
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kdiff3)
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if merge_mode; then
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if $base_present; then
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("$merge_tool_path" --auto \
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--L1 "$MERGED (Base)" \
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--L2 "$MERGED (Local)" \
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--L3 "$MERGED (Remote)" \
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-o "$MERGED" \
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"$BASE" "$LOCAL" "$REMOTE" \
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> /dev/null 2>&1)
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else
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("$merge_tool_path" --auto \
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--L1 "$MERGED (Local)" \
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--L2 "$MERGED (Remote)" \
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-o "$MERGED" \
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"$LOCAL" "$REMOTE" \
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> /dev/null 2>&1)
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fi
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status=$?
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else
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("$merge_tool_path" --auto \
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--L1 "$MERGED (A)" \
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--L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \
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> /dev/null 2>&1)
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fi
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;;
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kompare)
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"$merge_tool_path" "$LOCAL" "$REMOTE"
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;;
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tkdiff)
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if merge_mode; then
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if $base_present; then
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"$merge_tool_path" -a "$BASE" \
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-o "$MERGED" "$LOCAL" "$REMOTE"
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else
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"$merge_tool_path" \
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-o "$MERGED" "$LOCAL" "$REMOTE"
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fi
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status=$?
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE"
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fi
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;;
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meld)
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if merge_mode; then
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touch "$BACKUP"
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"$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
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check_unchanged
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE"
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fi
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;;
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diffuse)
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if merge_mode; then
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touch "$BACKUP"
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if $base_present; then
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"$merge_tool_path" \
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"$LOCAL" "$MERGED" "$REMOTE" \
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"$BASE" | cat
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else
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"$merge_tool_path" \
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"$LOCAL" "$MERGED" "$REMOTE" | cat
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fi
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check_unchanged
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE" | cat
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fi
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;;
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vimdiff)
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if merge_mode; then
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touch "$BACKUP"
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"$merge_tool_path" -d -c "wincmd l" \
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"$LOCAL" "$MERGED" "$REMOTE"
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check_unchanged
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else
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"$merge_tool_path" -d -c "wincmd l" \
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"$LOCAL" "$REMOTE"
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fi
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;;
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gvimdiff)
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if merge_mode; then
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touch "$BACKUP"
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"$merge_tool_path" -d -c "wincmd l" -f \
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"$LOCAL" "$MERGED" "$REMOTE"
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check_unchanged
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else
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"$merge_tool_path" -d -c "wincmd l" -f \
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"$LOCAL" "$REMOTE"
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fi
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;;
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xxdiff)
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if merge_mode; then
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touch "$BACKUP"
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if $base_present; then
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"$merge_tool_path" -X --show-merged-pane \
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-R 'Accel.SaveAsMerged: "Ctrl-S"' \
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-R 'Accel.Search: "Ctrl+F"' \
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-R 'Accel.SearchForward: "Ctrl-G"' \
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--merged-file "$MERGED" \
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"$LOCAL" "$BASE" "$REMOTE"
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else
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"$merge_tool_path" -X $extra \
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-R 'Accel.SaveAsMerged: "Ctrl-S"' \
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-R 'Accel.Search: "Ctrl+F"' \
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-R 'Accel.SearchForward: "Ctrl-G"' \
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--merged-file "$MERGED" \
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"$LOCAL" "$REMOTE"
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fi
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check_unchanged
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else
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"$merge_tool_path" \
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-R 'Accel.Search: "Ctrl+F"' \
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-R 'Accel.SearchForward: "Ctrl-G"' \
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"$LOCAL" "$REMOTE"
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fi
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;;
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opendiff)
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if merge_mode; then
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touch "$BACKUP"
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if $base_present; then
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"$merge_tool_path" "$LOCAL" "$REMOTE" \
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-ancestor "$BASE" \
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-merge "$MERGED" | cat
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE" \
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-merge "$MERGED" | cat
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fi
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check_unchanged
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE" | cat
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fi
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;;
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ecmerge)
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if merge_mode; then
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touch "$BACKUP"
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if $base_present; then
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"$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \
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--default --mode=merge3 --to="$MERGED"
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE" \
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--default --mode=merge2 --to="$MERGED"
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fi
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check_unchanged
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else
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"$merge_tool_path" "$LOCAL" "$REMOTE" \
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--default --mode=merge2 --to="$MERGED"
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fi
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;;
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emerge)
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if merge_mode; then
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if $base_present; then
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"$merge_tool_path" \
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-f emerge-files-with-ancestor-command \
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"$LOCAL" "$REMOTE" "$BASE" \
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"$(basename "$MERGED")"
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else
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"$merge_tool_path" \
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-f emerge-files-command \
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"$LOCAL" "$REMOTE" \
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"$(basename "$MERGED")"
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fi
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status=$?
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else
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"$merge_tool_path" -f emerge-files-command \
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"$LOCAL" "$REMOTE" "$(basename "$MERGED")"
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fi
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;;
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tortoisemerge)
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if $base_present; then
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touch "$BACKUP"
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"$merge_tool_path" \
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-base:"$BASE" -mine:"$LOCAL" \
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-theirs:"$REMOTE" -merged:"$MERGED"
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check_unchanged
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else
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echo "TortoiseMerge cannot be used without a base" 1>&2
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status=1
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fi
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;;
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*)
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if test -z "$merge_tool_cmd"; then
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if merge_mode; then
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status=1
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fi
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break
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fi
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if merge_mode; then
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if test "$merge_tool_trust_exit_code" = "false"; then
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touch "$BACKUP"
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( eval $merge_tool_cmd )
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check_unchanged
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else
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( eval $merge_tool_cmd )
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status=$?
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fi
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else
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( eval $merge_tool_cmd )
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fi
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;;
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esac
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return $status
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}
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guess_merge_tool () {
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if merge_mode; then
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tools="tortoisemerge"
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else
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tools="kompare"
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fi
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if test -n "$DISPLAY"; then
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if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
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tools="meld opendiff kdiff3 tkdiff xxdiff $tools"
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else
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tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
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fi
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tools="$tools gvimdiff diffuse ecmerge"
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fi
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if echo "${VISUAL:-$EDITOR}" | grep emacs > /dev/null 2>&1; then
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# $EDITOR is emacs so add emerge as a candidate
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tools="$tools emerge vimdiff"
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elif echo "${VISUAL:-$EDITOR}" | grep vim > /dev/null 2>&1; then
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# $EDITOR is vim so add vimdiff as a candidate
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tools="$tools vimdiff emerge"
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else
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tools="$tools emerge vimdiff"
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fi
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echo >&2 "merge tool candidates: $tools"
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# Loop over each candidate and stop when a valid merge tool is found.
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for i in $tools
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do
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merge_tool_path="$(translate_merge_tool_path "$i")"
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if type "$merge_tool_path" > /dev/null 2>&1; then
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merge_tool="$i"
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break
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fi
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done
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if test -z "$merge_tool" ; then
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echo >&2 "No known merge resolution program available."
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return 1
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fi
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echo "$merge_tool"
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}
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get_configured_merge_tool () {
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# Diff mode first tries diff.tool and falls back to merge.tool.
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# Merge mode only checks merge.tool
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if diff_mode; then
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tool=$(git config diff.tool)
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fi
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if test -z "$tool"; then
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tool=$(git config merge.tool)
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fi
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if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
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echo >&2 "git config option $TOOL_MODE.tool set to unknown tool: $merge_tool"
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echo >&2 "Resetting to default..."
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return 1
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fi
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echo "$tool"
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}
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get_merge_tool_path () {
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# A merge tool has been set, so verify that it's valid.
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if ! valid_tool "$merge_tool"; then
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echo >&2 "Unknown merge tool $merge_tool"
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exit 1
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fi
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if diff_mode; then
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merge_tool_path=$(git config difftool."$merge_tool".path)
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fi
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if test -z "$merge_tool_path"; then
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merge_tool_path=$(git config mergetool."$merge_tool".path)
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fi
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merge_tool_path="$(translate_merge_tool_path "$merge_tool" "$merge_tool_path")"
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if test -z "$merge_tool_cmd" && ! type "$merge_tool_path" > /dev/null 2>&1; then
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echo >&2 "The $TOOL_MODE tool $merge_tool is not available as '$merge_tool_path'"
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exit 1
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fi
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echo "$merge_tool_path"
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}
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get_merge_tool () {
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merge_tool="$1"
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# Check if a merge tool has been configured
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if test -z "$merge_tool"; then
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merge_tool=$(get_configured_merge_tool)
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fi
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# Try to guess an appropriate merge tool if no tool has been set.
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if test -z "$merge_tool"; then
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merge_tool=$(guess_merge_tool) || exit
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fi
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echo "$merge_tool"
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}
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